Abstract
The canal repositional procedure (CRP) significantly relieves paroxysmal sym-ptoms of benign paroxysmal positional vertigo (BPPV), and accurate diagnosis of BPPV as well as identification of the site of the debris improves the efficacy of the therapy. However, BPPV is not only cause of positional vertigo, other diseases could also cause positional vertigo. We studied 248 patients admitted to our department at Osaka City University Hospital with the positional vertigo, to determine the frequency of BPPV and other lesions. Of these, 143 (57.7%) had peripheral lesions and 105 (42.3%) had evidence of central lesions. BPPV was found in 87 (35%), 5 of these BPPV cases were associated with central lesions. Physicians must be aware that it may be difficult to distinguish central lesions from BPPV on the symptoms.
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